What features in iOS 5.1?

On last Wednesday, Apple at its keynote event with the release of the new iPad and the Apple TV, also announced the upgrade of iOS i.e.. iOS 5.1 which contains improvements, bug fixes and a few added features to the iPad, iPod touch and the iPhone.

• Japanese language support for Siri (only iPhone 4S).
• Photos can now be deleted from the photo stream.
• Camera shortcut now always visible on the lockscreen of iPhone 4, iPhone 4S, iPhone 3Gs and iPod touch (4th generation)
• Camera face detection now highlights all the faces it detects.
• Redesigned camera app for the iPad.
• Audio for TV Shows and Movies on iPad optimized to sound louder and clearer.
• Podcast controls for playback speed and a 30 second rewind for iPad.
• Genius mixes and Genius playlists for iTunes Match subscribers.
• Fixed bugs affecting battery life.
• Fixed issue that ocassionally caused audio to drop for outgoing calls.